Stage 3 prostate cancer is a fairly advanced stage of prostate cancer where cancer has been detected beyond the confines of the prostate itself. It is also known as stage T3 (using the TNM staging system).
Specifically, stage 3 prostate cancer has extended through the capsule that surrounds the prostate, but has not spread to distant sites in the body.
There are two sub-stages of stage 3 prostate cancer:
- T3a: The tumor has only gone through the capsule without invading the seminal vesicles.
- T3b: The tumor has invaded the seminal vesicles.
Kumar V, Abbas A, Fausto N. Robbins Pathologic Basis of Disease 7th Edition. 2004.